[dns-operations] Cname errors?

[Andrew Boling]

It's a really bad idea to turn off this warning. It's there for a reason.

The original RFCs strongly discourage pointing NS records at aliases (RFC
2181 goes on to forbid it), and I'm pretty sure I've seen BIND recursors
drop domains with this configuration after a NS record refresh. (glue
expiration, explicit NS query, etc.)

On Mon, Sep 28, 2015 at 9:42 PM, Lyle Giese <lyle at lcrcomputer.net> wrote:

> A couple of weeks ago concurrent with a new release from ISC(I am running
> 9.9.7-P3 right now), I started seeing these and just have not taken the
> time to follow up here.
>
> I understand the log entry and am not going bonkers about the extra log
> entries, but concerned if this becomes a performance or lookup issue, can I
> turn off this behavior?
>
> I know the proper answer is for the other guys to stop doing stupid stuff.
> But unfortunately that is not always a good answer for management for when
> they can not get to their favorite website because of this issue.
>
> Lyle Giese
> LCR Computer Services, Inc.
>
> Sep 27 01:39:48 linux1 named[3497]: skipping nameserver '
> router-adm.utcb.ro' because it is a CNAME, while resolving
> '169.156.38.89.in-addr.arpa/PTR'
> Sep 27 01:39:48 linux1 named[3497]: skipping nameserver '
> router-civile.utcb.ro' because it is a CNAME, while resolving
> '169.156.38.89.in-addr.arpa/PTR'
> Sep 27 01:39:49 linux1 named[3497]: skipping nameserver '
> router-adm.utcb.ro' because it is a CNAME, while resolving
> '169.156.38.89.in-addr.arpa/PTR'
> Sep 27 01:39:49 linux1 named[3497]: skipping nameserver '
> router-civile.utcb.ro' because it is a CNAME, while resolving
> '169.156.38.89.in-addr.arpa/PTR'
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